Nabbed some coins on MtGox on the way down and now Id like to move 1 to my home pc which is running the Bitcoin-Qt wallet is up to date on blockchains and is secured. Also mining with it too using GUIMiner.

How do I get a coin to my offline wallet from MtGox securely and quickly?

I would even recommend not have all your bitcoins in just one exchanger, and also not to have all your virtual wealth in one single virtual currency. Diversify those two things and you will safer, and incidentally able to do arbitrage ;-)